FILE - In this Aug. 23, 2013 file photo, Sen. Claire McCaskill, D-Mo., speaks in St. Joseph, Mo. Much to her astonishment but fulfilling a lifelong dream, the former prosecutor was chosen Monday, Jan. 26, 2016 for jury duty in St. Louis to help decide a slip-and-fall case against a convenience store giant accused of negligence. (AP Photo/The St. Joseph News-Press, Sait Serkan Gurbuz, File)

Missouri Sen. Claire McCaskill tweeted photographic evidence Sunday of her shotgunning a Bud Light following skepticism of a claim she made in her new memoir "Plenty Ladylike." (Twitter/@PlentyLadyLike)

FILE - This April 2, 2014 file photo shows Sen. Claire McCaskill, D-Mo. on Capitol Hill in Washington. The Education Department on Thursday took the unprecedented step of releasing the names of the 55 colleges and universities currently facing a Title IX investigation over their handling of sexual abuse complaints. The release came two days after a White House task force promised greater government transparency on sexual assault in higher education. Going forward, the department said, it will keep an updated list of schools facing such an investigation and make it available upon request. Sens. Kirsten Gillibrand, D-N.Y., and Claire McCaskill, D-Mo., have said non-compliance under the law is "far too common." They say a lack of federal resources is partly to blame for that, and they've sought more money to ensure timely and proper investigations. (AP Photo/Pablo Martinez Monsivais, File)

FILE - This April 2, 2014 file photo shows Sen. Claire McCaskill, D-Mo. on Capitol Hill in Washington. The Education Department on Thursday took the unprecedented step of releasing the names of the 55 colleges and universities currently facing a Title IX investigation over their handling of sexual abuse complaints. The release came two days after a White House task force promised greater government transparency on sexual assault in higher education. Going forward, the department said, it will keep an updated list of schools facing such an investigation and make it available upon request. Sens. Kirsten Gillibrand, D-N.Y., and Claire McCaskill, D-Mo., have said non-compliance under the law is "far too common." They say a lack of federal resources is partly to blame for that, and they've sought more money to ensure timely and proper investigations. (AP Photo/Pablo Martinez Monsivais, File)

Sen. Claire McCaskill, Missouri Democrat, is working to create a comprehensive bill to improve sexual assault prevention and response on college campuses, that may include ways to better collect data on assaults. (Associated Press)

Sen. Claire McCaskill, Missouri Democrat, is working to create a comprehensive bill to improve sexual assault prevention and response on college campuses, that may include ways to better collect data on assaults. (Associated Press)

FILE - This April 2, 2014 file photo shows Sen. Claire McCaskill, D-Mo. on Capitol Hill in Washington. The Education Department on Thursday took the unprecedented step of releasing the names of the 55 colleges and universities currently facing a Title IX investigation over their handling of sexual abuse complaints. The release came two days after a White House task force promised greater government transparency on sexual assault in higher education. Going forward, the department said, it will keep an updated list of schools facing such an investigation and make it available upon request. Sens. Kirsten Gillibrand, D-N.Y., and Claire McCaskill, D-Mo., have said non-compliance under the law is "far too common." They say a lack of federal resources is partly to blame for that, and they've sought more money to ensure timely and proper investigations. (AP Photo/Pablo Martinez Monsivais, File)

FILE - This April 2, 2014 file photo shows Sen. Claire McCaskill, D-Mo. on Capitol Hill in Washington. The Education Department on Thursday took the unprecedented step of releasing the names of the 55 colleges and universities currently facing a Title IX investigation over their handling of sexual abuse complaints. The release came two days after a White House task force promised greater government transparency on sexual assault in higher education. Going forward, the department said, it will keep an updated list of schools facing such an investigation and make it available upon request. Sens. Kirsten Gillibrand, D-N.Y., and Claire McCaskill, D-Mo., have said non-compliance under the law is "far too common." They say a lack of federal resources is partly to blame for that, and they've sought more money to ensure timely and proper investigations. (AP Photo/Pablo Martinez Monsivais, File)

Senate Consumer Protection subcommittee Chair Sen. Claire McCaskill, D-Mo., questions General Motors CEO Mary Barra on Capitol Hill in Washington, Wednesday, April 2, 2014, during the subcommittee's hearing on General Motors. McCaskill said the new GM, which emerged from bankruptcy in 2009, had ample time to recall cars equipped with a faulty ignition switch that is linked to at least 13 deaths. GM began recalling the cars this February. (AP Photo/Pablo Martinez Monsivais)